
LOLIN C3 Mini is a development board based on the ESP32C3 microcontroller using RISCV32 architecture.
This board features a maximum CPU frequency of 160 MHz and 4MB flash memory.
About LOLIN C3 Mini
Tiny ESP32-C3 board from Wemos with USB-C - ideal for compact, low-power IoT projects with Wi-Fi and BLE 5.
📋 Technical Specifications
Complete technical specification details for LOLIN C3 Mini
🛰️ Connectivity
🧠 Microcontroller
✨ Features & Pins
LOLIN C3 Mini Pinout Diagram
Complete pin reference for LOLIN C3 Mini

Useful Links
Datasheets and resources for LOLIN C3 Mini
Pin Mappings
Complete pinout and GPIO mapping for LOLIN C3 Mini
| Pin | Analog | Touch | PWM | Other |
|---|---|---|---|---|
| 0 | A0 | |||
| 1 | A1 | |||
| 2 | A2 | SCK | ||
| 3 | A3 | MISO | ||
| 4 | A4 | MOSI | ||
| 5 | A5 | SS | ||
| 7 | LED_BUILTIN | |||
| 8 | SDA | |||
| 10 | SCL | |||
| 20 | RX | |||
| 21 | TX |
Default Tools & Configuration
Build and upload settings for LOLIN C3 Mini
| Setting | Value |
|---|---|
| Bootloader tool | esptool_py |
| Uploader tool | esptool_py |
| Network uploader tool | esp_ota |
| Bootloader address | 0x0 |
| Flash mode | dio |
| Boot mode | qio |
| Maximum upload size | 1280 KB (1310720 bytes) |
| Maximum data size | 320 KB (327680 bytes) |
The LOLIN C3 Mini uses esptool_py for uploads , esp_ota for OTA updates, and esptool_py bootloader at 0x0.
Flash mode: dio | Boot mode: qio
Max sketch size: 1280 KB | Max data size: 320 KB
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